1751A 1550 nm DWDM DFB Laser Module

Transcription

1 1751A 1550 nm DWDM DFB Laser Module Applications Node capability Narrow transmitter housing Networks with limited fiber Architectures using separate optical wavelengths to carry targeted services Features Standard ITU grid wavelengths Advanced analog chip design Reduces equipment requirements in the hub Telcordia Technologies TM 468 compliant Wide temperature range stable even in harsh environments The 1751 laser module is a Dense WavelengthDivision Multiplexing (DWDM) laser for analog applications. It features a distributed feedback chip that has been designed specifically for Radio Frequency (RF) applications. The 1751 laser module has a wide temperature range for reliable performance in harsh node environments and narrow transmitter designs. It also features low adiabatic chirp to maximize signal quality in short and long lengths of fiber. The laser s excellent inherent linearity minimizes degradation of the broadcast signals caused by quadrature amplitude modulated (QAM) channels. The versatile 1751 laser module reduces cable network architecture fiber needs and lessens equipment reqirements in the hub. The 1751 is available in a wide range of standard ITU wavelengths. The lasers are offered as either forwardpath ( ) or returnpath (5 210 ) modules. Performance Highlights Min Typical Max Units Available wavelengths nm Optical Output Power (multiple versions) 610 mw Temperature Case Temperature Range C Frequency Range: Return Path Forward Path Composite Second Order 50 dbc Composite Triple Beat 60 dbc Adiabatic Chirp (measured at 500 ) /ma See following pages for complete specifications and conditions. For more information on this and other products: Contact Sales at Ortel , or visit

2 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Symbol Condition Min Max Units Operating Case Temperature T C continuous C Storage Temperature T STG C Laser Forward dc Current 150 ma Reverse Voltage Photodiode V RPD 10 V Laser Reverse Voltage, dc V R 1 V ESD HBM: R = 1500 Ohm, C = 100 pf V TEC Current I TEC continuous A RF Input Power P RFIN I F = I OP 62 dbmv Electrical/Optical Characteristics Laser Temperature (T L ) = 25 C, I F =I OP, Beginning of Life (BOL) Parameter Symbol Condition Min Typ Max Unit Wavelength? OP I F = I OP, T = T OP nm Optical Output Power P O 1751xxxx06 version 08 version 10 version mw mw mw Optical Isolation ISO 30 db Sidemode Suppression Ratio SMSR 35 db Laser Relative Intensity Noise RIN I F = I TH + 70 ma, <155 db/hz T = 25 C Wavelength Drift as Case Temp. is λ I F = 60 ma, T = T OP, 0.04 nm Changed Tc varied from min max Threshold Current I TH 20 ma Operating Current I OP 120 ma Monitor PD Responsivity r PD V RM =5V µa/m W Thermistor Resistance R TH T OP =25 C K? Thermistor Temperature TC TH T OP =25 C 4.4 %/ C Coefficient TEC Current I TEC 40<T C <+85 C A I F = 100 ma Fiber Length May include splice m Fiber Buffer 900 µm Fiber Core / Cladding 9/125 µm

3 RF Characteristics Parameter Symbol Condition Min Typ Max Units Frequency Range 1 F I F = 60 ma Return Path Forward Path Frequency Response 1 Return Path Version 5210 Forward Path Version I F = 60 ma, T OP = 25 C ±0.5 ±0.5 db db RF Return Loss 1 S11 16 db Composite Second Order CSO I F = I OP 50 dbc Composite Triple Beat CTB I F = I OP 60 dbc Adiabatic Chirp FM I F = 60 ma, T = 25 C, measured at / ma Nominal Input Impedance Z IN 25 db 1. Tested in a 50 Ohm resistively matched system. 2. Eight channel loading with 10% OMI and 40 km fiber. 3. Measured at Measured at , , and All parameters at Beginning of Life (BOL) and I F = I OP, unless noted otherwise. In order to prevent reflectioninduced distortion, the laser must be connected to an optical cable having a return loss of at least 55 db for discrete reflections and 30 db for distributed reflections. Electrical Schematics Figure W Laser Schematic Figure A Laser Schematic Figure A Circuit Schematic 3

4 Outline Diagram Dimensions are in inches and (millimeters) Pin Information Pin No. Description 1 Thermistor 2 Thermistor 3 Dc Laser Bias () 4 MPD Anode () 5 MPD Cathode (+) 6 Thermal Electric Cooler (+) 7 Thermal Electric Cooler () 8 Case Ground 9 Case Ground 10 NC 11 Laser Common (+) 12 Laser Modulation () 13 Laser Common (+) 14 NC 4

5 Laser Safety This product meets the appropriate standard in Title 21 of the Code of Federal Regulations (CFR). FDA/CDRH Class IIIb laser product. This device has been classified with the FDA/CDRH under accession number Singlemode fiber pigtail with SC/APC connectors (standard). Wavelength = 1.5 µm. Maximum power = 30 mw. Because of size constraints, laser safety labeling (including an FDA class IIIb label) is not affixed to the module, but attached to the outside of the shipping carton. Product is not shipped with power supply. Caution: Use of controls, adjustments and procedures other than those specified herein may result in hazardous laser radiation exposure. 5

6 Ordering Information Contact Ortel for ordering information at Ordering Code Definitions SC FF 10 Family name Analog 1550 nm, DFB, DWDM ITU Wavelengths Connectors FC = FC/APC SC = SC/APC PG = None (no connector) 19 = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch = ch. 60 Optical Power, min. 06 = 6 mw 08 = 8 mw 10 = 10 mw Frequency Plan FF = Forward Path RR = Return Path NN = NPR BB = Both Forward and Return Information contained herein is deemed to be reliable and accurate as of issue date. EMCORE reserves the right to change the design or specifications of the product at any time without notice. Ortel, the Ortel logo, EMCORE, and the EMCORE logo are trademarks of EMCORE Corporation. ds.1751 Ortel, a division of EMCORE 2015 West Chestnut Street Alhambra, California Tel: Fax: Copyright EMCORE Corporation 6